312231012131 has 16 divisors (see below), whose sum is σ = 328221573120. Its totient is φ = 296448509280.

The previous prime is 312231012113. The next prime is 312231012143. The reversal of 312231012131 is 131210132213.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 312231012131 - 2²² = 312226817827 is a prime.

It is a super-2 number, since 2×312231012131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312231012101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1957205 + ... + 2110713.

It is an arithmetic number, because the mean of its divisors is an integer number (20513848320).

Almost surely, 2^312231012131 is an apocalyptic number.

312231012131 is a deficient number, since it is larger than the sum of its proper divisors (15990560989).

312231012131 is a wasteful number, since it uses less digits than its factorization.

312231012131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154186.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 312231012131 its reverse (131210132213), we get a palindrome (443441144344).

The spelling of 312231012131 in words is "three hundred twelve billion, two hundred thirty-one million, twelve thousand, one hundred thirty-one".